Bung extractor



Jan. 22,1935. 1''. MAYNZ ET AL 1,933,971

' BUNG EXTRACTOR ed May 21, 1934 INVENTORS THEGDORE MAYNZ B HR8RT NMSHERTH Ww, 1:

Iatented Jan. 22, 1935 PATENT, OFFICE BUNG EXTRACTOB Theodore Maynz and Herbert W. Huwerth, New York, N. Y., aasignors to Emanuel Maynl, doing business as Maynz & Company, New York, N. Y.

Application May 21, 1934, Serial No. 726,731

9 Claims. (01. 217-112 This invention relates to power-driven bung extractors and the like wherein a driven rotating tool is longitudinally movable toward the work for feeding adjustment.

An object of this invention is to provide that the tool may also have bodily adjustment laterally of its rotating axis, as for centering of the tool in the work, which latter therefore need not be as accurately positioned as would otherwise be necessary.

Another object of the invention is to provide that such lateral tool adjustment be had at theexpense of a minimum angular tool dis ment.

Still another object'is to provide means for yieldably maintaining the tool centered in'retracted position, so that adjusting manipula tion by the operator will be minimized.

lace- A further object is to accomplish these results I ing from the head part 2 to suitable driving means,

by simple and inexpensive means.

Still further objects and advantages of the i11- vention will be apparent from the following description taken in connection with the accompanying drawing, in which Fig.1 is a view in side elevation of a hung extractor embodying the invention, parts being shown as in retracted position, and a barrel being indicated in broken lines as imposition to have its bung extracted by the machine; Fig. 2 is an enlarged detail ofhead parts of the machine appearing in Fig. 1, partly broken away to show details of construction; and Fig. 3 is a sectional view as in the plane of line 3--3, Fig. 2.

With reference 'now to the drawing, the, machine illustrated comprises a stationary frame, having a work-receiving bed part 1 and there above a head part 2. Since the purpose of this particular machine is to extract the bungs of beer barrels and the like, its bed part 1 may preferreceive and position such barrels, and is here shown as includinga set of rollers 4 on which a I barrel may rest in equilibrium yet rotatable about its own axis, the barrels being rolled upon a feeding trackway to such position on the machine, and similarly from the machine by a delivering trackway, all as will be recognized as characteristic of the brewing art. Thus a barrel A positioned on the bed part of the machine, may be adjusted to bring its bung a uppermost.

Rotatably mounted in the head 2 is a vertically extending spindle 5, carrying at its lower extremity a tool 6 of corkscrew characteristic. For adjustment of the tool 6 by the operator, a lever '7 I is provided carried at its inner end by link means ably include a platform 3 particularly adapted to 8 mounted on the frame of the machine and car.- rying at its outer end a suitable handle. 9. Means generally indicated at 10 connect the lever 7 with the spindle 5, to permit rotation of the spindle relative to the lever and swinging adjustment of the lever relative to the spindle. A brace 11 is provided to bear against the barrel as the bum; is being extracted by the tool 6, the brace having a bearing on the spindle against longitudinal motion relative to the tool, and being secured against rotary motion by a connection with the lever '7 as conventionally indicated at 12. Thespindle 5 and its associated parts are preferably counterbalanced in the usual manner, as here indicated by a chain 13 passing over a sheave 14 and connected at its opposite end to the usual suitable counterweight arranged for movement in the hollow of the-column 15 of the frame of the machine.

A countershaft 16 is mounted on the frame leadhere indicated as a motor 17 connected by belting 18 running over the pulleys indicated.

ber 23 and inner member 24, the intermediate member 23 having connection with the outer member 22 as by s'tub shafts 25, and with the inner member 24 by stub shafts 26, all four of these stub shafts being in a common plane. The exact type of universal joint employed is immaterial provided the inner member 24 be driven by the sleeve 19 yet permitted angular adjustment relative thereto.

The spindle 5 extends through the sleeve 19 and the inner universal joint member 24 as indicated in Figs. 1 and 2. The spindle has-a sliding fit in the member 24 and is keyed therewith to be nonrotatable therein asby a key'27. The length of the spindle and of its keyway is suflicient to permit 'vertical adjustment of the spindle from its idle position as shown in Fig. 1, to the position in which it accomplishes its purpose, suitable means such as a collar 28 being preferably provided on the upper end of the spindle to limit its lowering motion.

The relation-of spindle 5 and sleeve 19, and particularly the clearance therebetween, is such as to allow the spindle suificient angular adjustment within the sleeve, about the center provid- 'will tend to maintain the spindle centered in the sleeve; but to assist in such centering and in opposition to unbalanced centrifugal forces, a concentric spring 29 is provided, here shown as secured at its upper end with the gear part 20 of the sleeve 19 and at its lower end to a collar 30 in which the spindle 5 is slidable.

Operation will be apparent. The motor 1"! drives the spindle 5 at a relatively low speed, acting through the belt connection 18, shaft 16, pinion 21, gear 20, sleeve 19, the described-universal joint and the key 27; the spring 29 yieldably maintaining the spindle concentric with the sleeve. The spindle with its tool 6 is yieldably maintained in the raised inoperative position shown in Fig. l, by'the described counterbalance acting through the chain 13 and lever 7.

The barrel A, whose bung a is to be extracted,

being positioned on the bed part 1 of the machine,

is rotated to bring its bung uppermost, in which position the bung will be approximately centered with the spindle 5. The operator thereupon lowers the tool 6 by the handle 9, the linkage 8 permitting the spindle to have such endwise motion. As the point of the tool 6 approaches the bung the operator accurately centers it before actually advancing it into the work. In this centering operation the spindle may move inthe sleeve 19 as indicated in Fig. 2. However, this angular spindle motion being about the center of the universal joint, and the latter being substantially removed from the work, the angular motion 'is slight, and in fact the tool has substantially only translatory or bodily motion in finding its center. The location of the universal joint above the head 2 of the machine serves also tomake the universal joint readily accessible.

Once the tool is centered in the work the operator may release the handle 9 of the lever 7,

- for after the bung has been extracted, the described counterbalance will return the lever and spindle to the position of Fig. l, and the spring 29 will realign the spindle.

What we claim is: 2 1. In a machine of the class described and hay-'- ing a frame with stationary head and work-receiving bed parts, said head having an opening, universal joint means rotatably mounted on said 7 head, tool-carrying spindle means slidably and nonrotatably 'mounted in said universal joint means and proportioned and arranged to extend loosely through said head opening, driving means for said universal joint means, and operatoroperated means 'for adjustment of said spindle means, longitudinally, and angularly about the center determined by said universal joint means.

2. In a machine of the class described and having a frame with stationary head and work-re ceiving bed parts, said head having an opening, universal joint means rotatably mounted on said head, tool-carrying spindle means slidably and nonrotatably mounted in said universal joint means and proportioned and arranged to extend loosely throughsaid head opening, driving means for said universal joint means, and operatoroperated means for adjustment of said spindle means, longitudinally, and angularly about the center determined by said universal joint means, said head being located between said universal joint means and said work-receiving bed, and said spindle having its tool end between said head and bed parts, whereby angularity of said tool will be minimized proportional to its corresponding displacement.

3. In a machine of the class described and having a frame with stationary head and work-receiving bed parts, sleeve means rotatably mounted in said head part, universal joint means mounted on said sleeve means, tool-carrying spindle means slidably and nonrotatably mounted in said universal joint means and disposed to extend through a said sleeve means, the parts being proportioned to permit limited angular adjustment of said sr indle means in said sleeve means about the center determined by said universal joint means, driving means for said sleeve means, and operatoroperated means for adjustment of said spindle means.

4. In a machine of the class described and having a stationary head and therebelow a workreceiving bed, sleeve means mounted in said head for rotation about an upright axis, universal joint means mounted on said'sleeve means above said head, tool-carrying spindle means slidably and nonrotatably mounted in said universal joint means and disposed to extend through said sleeve means, the parts being proportioned to permit limited angular. adjustment of said spindle means in said sleeve means about the center determined by said universal joint means, driving means for said sleeve means, and operator-operated means for adjustment of said spindle means.

5. In a machine of the class described and having a frame with stationary head and work-receiving bed parts, said head having an opening, universal joint means rotatably mounted on said head, tool-carrying spindle means slidably and nonrotatably mounted in said universal joint means and proportioned and arranged to extend loosely through said head opening, driving means for said universal joint means, operator-operated means for adjustment of saidspindle means, longitudinally, and angularly about the center determined by said universal joint means, and means for yieldably maintaining said spindle means aligned with-said head opening.

6. In a machine of the class described and having a frame with stationary head and work-receiving bed parts; sleeve means rotatably mounted in said head part, universal joint means mounted on said sleeve means, tool-carrying spindle means slidably and nonrotatably mounted in said universal joint means and disposed to extend through said sleeve means, the parts being proportioned to permit limited angular adjustment of said spindle means about the center determined by said universal joint means, driving means for said sleeve means, operator-operated means for adjustment of said spindle j means, and means effective between-said spindle and sleeve means for yieldably maintaining the former in predetermined position relative to the latter.

'I. In a machine of the class described and having a frame withstationary head and work-receiving bed parts, tool-carrying spindle means mounted in said head for longitudinal adjustment toward and from said bed, and means for driving said spindle means and permitting limited angular adjustmentthereof, and includin universal joint means located above said head.

8. In a machine of the class described and hav eeann v extracting tool arranzed to be portedlyaeeocintedwlthnidirametorswinslns endendwiaeodiuatmentreiativetheretoandasaoeintedwithsaidapindlemeansbetweenmd irnmeheedandthespindletooltoeontrollater- 5 nlandlonzitudinalmovementotuidtoolwhile permitting its rotational drive. I

9. Inamechineottheelnsdeacribedandhavin: a frame with stationary head and work-reeeivinsbedplrtsmaidbedpertsbeinzedoptedto receive and position a h'errel opposite add head and permit rotational ediustment of sold horrel aboutitsownaxis.spindlemeansmountedin said head for longitudinal adjustment toward and from said bed, means for driving said spindle means and permitting limited insular adjustment thereof about a single point adjacent said ,braeemeansaseoeioted spindle withsaidtool'mdadaptedtobearagainstsaid;

barrelaaaaidbungisbeinzextraetedbynid tool. and zuide means minted with said spindle topermittheoperatortoadinstsaidtooiaaainzt aaidbunmwherebytheuisotaaidtoolwiilbe maintained in elianmentwith said point durinzinitialinaertionoithetooiintothebunz. and thereafter-during removal or the buns the aetionotthebracemeans'asainsttheberrel maymovethebarreltonlicnthe'bunavvithsdd point.

THEODORE mm.

'1 W. HUWERTH. lit 

